538952991389 has 2 divisors, whose sum is σ = 538952991390. Its totient is φ = 538952991388.

The previous prime is 538952991383. The next prime is 538952991407. The reversal of 538952991389 is 983199259835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455456265625 + 83496725764 = 674875^2 + 288958^2 .

It is a cyclic number.

It is not a de Polignac number, because 538952991389 - 2¹⁶ = 538952925853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538952991383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269476495694 + 269476495695.

It is an arithmetic number, because the mean of its divisors is an integer number (269476495695).

Almost surely, 2^538952991389 is an apocalyptic number.

It is an amenable number.

538952991389 is a deficient number, since it is larger than the sum of its proper divisors (1).

538952991389 is an equidigital number, since it uses as much as digits as its factorization.

538952991389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188956800, while the sum is 71.

The spelling of 538952991389 in words is "five hundred thirty-eight billion, nine hundred fifty-two million, nine hundred ninety-one thousand, three hundred eighty-nine".